Stop-motion for looms.



G. N. BERTRAND.

STOP MOTION FOR LOOMS. APPLICATION man 00112. m4.

Patelited Aug. 28, 1917.

G. N, BERTR AND.

STOP MOTION FOR LOOMS.

APPLICATION FILED OCT 12 1914 PatentedAug. 28, 1917.

2 SHEETS-SHEET 2- 1 I r) -1 S 31 Ge of e Nfierfrmd.

NTE TTS ATNT GEORGE N. IBEBTRAND, OF STAFFORD SPRINGS, CONNECTICUT.

STOP-MOTION FOB LOOIVIS.

Application filed October 12, 1914. Serial No. 866,321.

looms.

The object of the invention is to provide a simply constructed device adapted to antomatically close an electric circuit and stop the loom, should breakage of one or more of the heddle frames or horizontal supports occur. 7 7

With the above and other objects in view, the invention consists of certain novel features of construction, combination and arrangement of parts as will be more fully described and claimed.

In the accompanying drawings Figure 1 represents a perspective view of a loom equipped with this improvement, said view being taken from the rear;

Fig. 2 is a plan view of the attachment detached;

Fig. 3 is a side elevation thereof showing the device applied and its support in section; V

Fig. i is a transverse section taken on the line H of Fig. 2; and

Fig. 5 is a longitudinal section thereof.

In Fig. 1 of the drawings, a portion of the loom is conventionally shown, said loom having the usual harness or heddle frames H, to the lower sides of which are attached the lower harness connections. These connections are here shown as comprising a plurality of metal members 5, which extend horizontally of the loom, and are pivoted at one of their ends as at 5 to a loom brace and connected at their other ends at 5 to members 5 connected to the heddle frames H. It is to be understood, however, that these connections may be of other construe-- tions. It is beneath these horizontal members 5 that my attachment, now to be described, is positioned.

My attachment, above referred to, comprises a substantially rectangular metallic frame 1 having a V-shaped extension or at' taching member 2 at one end, the apex of said member 2 having a bearing 3 therein Patented Aug. 28, 191W.

disposed longitudinally to receive a bolt adjustably connecting the device to a right a11- gular bracket 3. This bracket 3 is composed of apair of arms 8 and 9, the arm 8 being longitudinally slotted as shown at 8 for a purpose to be described and having one of its ends bolted to the bearing 3. The other arm 9 has a longitudinally extending open slot 9 at one end thereof to provide for adjustable connection with the arm 8, and the other end thereof is offset laterally as shown at 10 and provided with a transversely extending recess or notch 11, the purpose of which will be hereinafter described.

A steel bar or rod 4 is shown mounted in the end members 1 and 1 of the frame 1 and is insulated therefrom by suitable insulating material 1. This bar or rod 4 as shown in Figs. 1, 3, 4 and 5 is mounted in a plane above the plane of the end and side members of the frame.

A comb 6 is mounted in the frame 1 parallel with the rod 4, the ends thereof being supported by the end members 1 and 1 of the frame and the teeth of said comb project laterally at right angles as shown.

In use, the attachment is disposed beneath the horizontal members 5 of the harness con nections, by being attached to one of the loom braces B. The notch or recess 11 in the arm 9 of the bracket is designed to engage the upper flange f of the loom brace as shown in Fig. 3 to assist in retaining the device in operative position on said brace. The bracket 8 being adjustable both horizontally and vertically, and having its horizontal arm 8 adjust-ably connected to the apex of the V-shaped extension 2, provides an effective means for properly adjusting the frame 1 with respect to the horizontal members 5.

Current conducting wires 7 connect the bar or rod 4 with any suitable source of electricity, such as a dry battery 13 and with an electromagnet E attached to the handle of the loom, such as is shown at 11 in U. S. Patent No. 936,847, dated October 12, 1909, whereby when the circuit is closed, said handle will be immediately thrown out of opera tive position and the loom stopped.

The closing of the circuit is accomplished and the loom stopped by the breakage of the supporting means of the heddle frame H, said breakage causing the corresponding member 5 to which the heddle frame is connected-to drop into contact with the bar 4, thereby closing the circuit and through the connection of the electromagnet with the frame F of the loom, operating to stop the loom in a manner above described.

While the device is very simple in construction, it is very efficient in operation and may be attached to any loom, it being so positioned that when the harness strap or'hook which supports the harness breaks, the members 5which are disposed above the rod 4 and guided in the teeth of the'comb 6, will come in contact with the bar l and close the circuit, thus immediately throwing the loom out of operation and preventing all danger of defective work .which would occur should the loom continue to operate.

I claim 1. An attachment for looms comprising an open frame, a comb extending acrosssaid frame, the teeth of said comb projecting laterally with respect to the plane of said frame, a metal bar. extending across said frame and being insulatively fixed thereto, and having means at one end thereof for connection to an electrical conductor, and an adjustable bracket adjustably connected to said frame and being provided with attaching means.

2. An attachment for looms comprising an open rectangular frame, a comb extending longitudinally of said frame and attached at its end thereto, the teeth of said comb projecting at right angles to the-plane of said frame, a metal bar extending longitudinally Copies of this patent may be obtained for of said frame and being insulatively fixed at its ends to the ends thereof, said bar having means atone end thereof for connection to an electrical conductor, a V-shaped extension at one end of said frame, theapex of said extension projecting outwardly, and a right angular bracket adjustably-connected at one end to the apex of said extension and having attaching means at the other end thereof, said bracket being adjustablehorizontally and vertically. I

'3. The combinationiwith a loom having metal members extending horizontally across the same and connected to the'heddle frames thereof, of a frame attached to said loom and being disposed horizontally below said members, a comb extending across the last mentioned frame and having its teeth projecting upwardly and receiving said; members therebetween, a metal barextending across the last mentioned frame and insulated therefrom and being disposed slightly below'the plane of said members tobe engaged by the latter should the supports "of the heddle frames to whichthey'are connectedfbreak, and an electric circuit including said bar and said; members having a magnetftherein adapted to stop saidloomwhen energized.

In testimony whereof I have hereuntofset my hand in presence of two subscribing witnesses. i V

' GEORGE N. BERTRAND. Vitnesses: k M. D. OCONNEL 1 ,N; JYPE'W.

five cents each, by addressingtlleCommissioner of Patents, wash n tomnc. V I v Y 

